Cobalt sulfate, decomposition

Thermal decomposition is the process wherein the structure of the catalyst is formed by the heat treatment of the precursor after volatile components are decomposed or chemical water associated with the lattice structure of the solid is removed. Examples of such a phenomenon are the decomposition of metal nitrate, hydroxide, carbonate, chloride, sulfate, phosphate, hydroxy salts, or oxy salts to corresponding oxides. The following equation shows the decomposition of cobalt nitrate coupling with partial oxidation of Co ... 

Therefore, melts-solvents of the first kind are of interest in the following scientific aspects determination of the acid-base product of the ionic solvent and estimation of the upper limit of acidity of these solvents (such as nitrates, sulfates). The decrease of stability of the solvent acid can be used for the stepwise decomposition of acidic solutions of cations and synthesis of complex oxide compounds and composites by coprecipitation [53-56], It is possible to obtain complex oxides containing alkali metals by precipitation of multivalent metal oxides with the alkali metal oxide as a strong Lux base, as was reported by Hong et al., who used 0.59LiNO3-0.41LiOH mixed melt to obtain electrochemically active lithium cobaltate, LiCo02 [57]. 

The only known solid compounds containing the ion Co(H20)6 are the sulfate Co2(S04)3 18H20 and its alums. Although the first synthesizer of the sulfate reported he was able to store it in a stoppered tube for months without visible decomposition, later authors stated that this compound and the ammonium alum decompose at laboratory temperature within a few hours. By an improved drying procedure, the cesium alum is readily obtained in a form in which even the magnetic susceptibility (a very sensitive criterion for the presence of dipositive cobalt) shows that only very slow decomposition occurs. Use of this... 

Potassium or sodium-potassium alloy mixed with ammonium nitrate and ammonium sulfate results in explosion (NFPA 1986). Violent reactions may occur when a metal such as aluminum, magnesium, copper, cadmium, zinc, cobalt, nickel, lead, chromium, bismuth, or antimony in powdered form is mixed with fused ammonium nitrate. An explosion may occur when the mixture above is subjected to shock. A mixture with white phosphorus or sulfur explodes by percussion or shock. It explodes when heated with carbon. Mixture with concentrated acetic acid ignites on warming. Many metal salts, especially the chromates, dichromates, and chlorides, can lower the decomposition temperature of ammonium nitrate. For example, presence of 0.1% CaCb, NH4CI, AICI3, or FeCb can cause explosive decomposition at 175°C (347°F). Also, the presence of acid can further catalyze the decomposition of ammonium nitrate in presence of metal sulfides. 

Because the application of conventional methods requires separation of individual process stages and then their description by complex expressions, Tomaszewicz and Kotfica applied neural networks for the description of the decomposition of cobalt(II) sulfate(VI) hydrate. Such networics allow description of a given process without the necessity of dividing it into stages as a consequence, they are easy to handle and result in a very good accuracy of approximating the experimental data [122]. 

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